Far the most striking production of the thirteenth century in this kind was the _Opus Majus_ of Roger Bacon (1267), of which it has been said that it is at once the Encyclopaedia and the Novum Organum of that age;[92] at once a summary of knowledge, and the suggestion of a truer method. This, however, was merely the introductory sketch to a vaster encyclopaedic work, the _Compendium Philosophiae_, which was not perfected. "In common with minds of great and comprehensive grasp, his vivid perception of the intimate relationship of the different parts of philosophy, and his desire to raise himself from the dead level of every individual science, induced Bacon to grasp at and embrace the whole."[93] In truth, the encyclopaedic spirit was in the air throughout the thirteenth century. It was the century of books bearing the significant titles of Summa, or Universitas, or Speculum. The same spirit revived towards the middle of the sixteenth century. In 1541 a book was published at Basel by one Ringelberg, which first took the name of Cyclopaedia, that has since then become so familiar a word in Western Europe. This was followed within sixty years by several other works of the same kind. The movement reached its height in a book which remained the best in its order for a century. A German, one J.H. Alsted (1588-1638), published in 1620 an _Encyclopaedia scientiarum omnium_. A hundred years later the illustrious Leibnitz pronounced it a worthy task to perfect and amend Alsted's book. What was wanting to the excellent man, he said, was neither labour nor judgment, but material, and the good fortune of such days as ours. And Leibnitz wrote a paper of suggestions for its extension and improvement.[94] Alsted's Encyclopaedia is of course written in Latin, and he prefixes to it by way of motto the celebrated lines in which Lucretius declares that nothing is sweeter than to dwell apart in the serene temples of the wise. Though he informs us in the preface that his object was to trace the outlines of the great "latifundium regni philosophici" in a single syntagma, yet he really does no more than arrange a number of separate treatises or manuals, and even dictionaries, within the limits of a couple of folios. As is natural to the spirit of the age in which he wrote, great predominance is given to the verbal sciences of grammar, rhetoric, and formal logic, and a verbal or logical division regulates the distribution of the matter, rather than a scientific regard for its objective relations.